- **If your indexer is set to ''​solr''​**,​ a newer version of the solr extension has been fixed to circumvent ​this error (it'​s ​a problem in one of Java's HttpURLConnection related classes). You can try one of the following:

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- **If your indexer is set to ''​solr''​**,​ a newer version of the solr extension has been fixed to circumvent ​a SIGPIPE ​error caused by a problem in one of Java's HttpURLConnection related classes. You can try one of the following:

* You could grab a newer version of Greenstone 3. Greenstone 3.09 (still to be released at the time of writing) will contain this fix, as do nightly binaries from http://​www.greenstone.org/​caveat-emptor/?​latest=latest

* You could grab a newer version of Greenstone 3. Greenstone 3.09 (still to be released at the time of writing) will contain this fix, as do nightly binaries from http://​www.greenstone.org/​caveat-emptor/?​latest=latest

* Get a newer version of the solr extension from SVN that contains the fix from http://​trac.greenstone.org/​browser/​gs3-extensions/​solr/​trunk/​src?​rev=32088. SVN checkout this folder into the GS3 ''​ext''​ subfolder as ''​solr'',​ after removing the old ''​ext/​solr''​ folder. Then use a terminal to go into the ''​ext/​solr''​ folder and run ''​ant del-service add-service''​. ​

* Get a newer version of the solr extension from SVN that contains the fix from http://​trac.greenstone.org/​browser/​gs3-extensions/​solr/​trunk/​src?​rev=32088. SVN checkout this folder into the GS3 ''​ext''​ subfolder as ''​solr'',​ after removing the old ''​ext/​solr''​ folder. Then use a terminal to go into the ''​ext/​solr''​ folder and run ''​ant del-service add-service''​. ​